Leonardo Rosales is Co-Founder and CTO at Ralio, a London-based fintech building the trust and connectivity layer for agentic business payments, enabling AI agents to transact safely and autonomously.

Originally from Argentina, Leonardo co-founded Ralio in 2025 alongside Ghali Bennani Laafiret after going through the Antler startup program, bringing deep technical expertise to the emerging agentic finance space.

Leonardo has demonstrated strong technical leadership, drawing on mentorship from seasoned engineering leaders to build robust, compliance-grade payment infrastructure for AI-native businesses.

At Ralio, Leonardo architects the core platform, including programmable spending limits, intent verification, fraud checks, and verifiable agent identity, positioning the company as a new category in fintech.

Ralio's pre-seed round was 3x oversubscribed within three months of founding, raising $2.5M from investors including Antler, SVV, Seed X, Love Ventures, and Plug and Play.